:root {
  color-scheme: light;
  --text: #243043;
  --muted: #586577;
  --link: #215b96;
  --line: #dce3eb;
  --soft: #f5f8fc;
  --width: 1000px;
}

* { box-sizing: border-box; }
html { scroll-padding-top: 72px; }
body { margin: 0; color: var(--text); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif; font-size: 14px; line-height: 1.55; }
body:has(dialog[open]) { overflow: hidden; }
a { color: var(--link); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: #194c7e; text-decoration: underline; }
button { font: inherit; cursor: pointer; }
a:focus-visible, button:focus-visible, pre:focus-visible, video:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, ul { margin: 0; }
strong { font-weight: 650; }
[hidden] { display: none !important; }
.container { width: min(var(--width), calc(100% - 40px)); margin-inline: auto; }
.icon-definitions { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 14px; height: 14px; flex: 0 0 14px; fill: none; stroke: currentColor; stroke-width: 1.65; stroke-linecap: round; stroke-linejoin: round; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 50; padding: 8px 12px; color: #fff; background: var(--link); border-radius: 6px; }
.skip-link:focus { top: 10px; }

/* Compact navigation and a shared button style for useful resources. */
.site-header { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 52px; gap: 18px; }
.site-name { color: var(--text); font-size: 16px; font-weight: 650; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a { color: var(--muted); font-size: 12px; line-height: 18px; padding: 5px 10px; border: 1px solid transparent; border-radius: 6px; }
.main-nav a:hover, .main-nav a[aria-current] { color: var(--link); background: #edf3fb; border-color: #d8e3f1; text-decoration: none; }
.menu-toggle { display: none; color: var(--text); border: 1px solid #cbd5e2; border-radius: 6px; background: #fff; padding: 4px 10px; font-size: 12px; }
.profile-links, .resource-links { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; list-style: none; padding: 0; }
.profile-links li, .resource-links li { display: flex; }
.profile-links a, .resource-links a, .resource-links button, .action-button { display: inline-flex; align-items: center; justify-content: center; gap: 5px; min-height: 28px; padding: 3px 9px; color: #315575; background: #fff; border: 1px solid #cbd7e4; border-radius: 6px; font-size: 12px; font-weight: 500; line-height: 20px; white-space: nowrap; }
.profile-links a:hover, .resource-links a:hover, .resource-links button:hover, .action-button:hover { color: #194c7e; border-color: #8eabc9; background: #edf3fa; text-decoration: none; }
.profile-links .button-primary, .action-button.button-primary { color: #fff; background: #245b91; border-color: #245b91; }
.profile-links .button-primary:hover, .action-button.button-primary:hover { color: #fff; background: #194974; border-color: #194974; }
.resource-links li:first-child a { color: #215b96; background: #f0f5fc; border-color: #bdcfe3; }

/* Small framed portrait, identity, contact buttons, and PhD availability. */
.profile { display: grid; grid-template-columns: 112px minmax(0, 1fr); align-items: center; column-gap: 24px; row-gap: 16px; margin-top: 24px; padding: 22px; border: 1px solid var(--line); border-radius: 14px; background: #fafbfd; }
.profile-photo { width: 112px; height: 136px; object-fit: cover; border: 1px solid #ced8e4; border-radius: 10px; padding: 3px; background: #fff; }
.profile-heading { display: flex; align-items: last baseline; flex-wrap: wrap; column-gap: 16px; row-gap: 2px; }
h1 { font-size: 32px; font-weight: 650; line-height: 1.2; letter-spacing: -.6px; }
.name-chinese { display: block; margin-bottom: 4px; color: var(--muted); font-size: 16px; font-weight: 400; line-height: 1.4; letter-spacing: 0; }
.profile-location { color: var(--muted); font-size: 12px; }
.research-interests { font-size: 15px; margin-top: 5px; line-height: 1.5; }
.profile-affiliation { margin-top: 3px; color: var(--muted); font-size: 13px; }
.profile-links { margin-top: 10px; }
.profile-links a { min-height: 31px; padding: 4px 10px; }
.phd-banner { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.phd-notice { font-size: 13px; line-height: 1.55; }
.phd-notice strong { color: #194e80; }
.phd-banner .action-button { flex-shrink: 0; }

/* Full-width sections with enough space between topics and paragraphs. */
.section { margin-top: 32px; }
.section > h2, .section-heading { border-bottom: 1px solid var(--line); padding-bottom: 10px; margin-bottom: 14px; }
h2 { font-size: 20px; line-height: 1.35; font-weight: 650; }
.section > p + p { margin-top: 10px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.section-tools { display: flex; align-items: center; gap: 12px; }
.section-note { font-size: 11px; color: var(--muted); }
#bio { font-size: 14px; line-height: 1.7; }
.news-list { list-style: none; padding: 0; }
.news-list li { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 12px; padding-block: 6px; font-size: 13px; line-height: 1.6; }
.news-list time { color: var(--muted); font-size: 12px; padding-top: 1px; font-variant-numeric: tabular-nums; }

/* Image-and-text research rows keep metadata and resource buttons together. */
.work-row { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 24px; align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line); }
.work-row:first-child { padding-top: 5px; }
.work-row:last-child { border-bottom: 0; padding-bottom: 0; }
.work-media { position: relative; display: flex; align-items: center; justify-content: center; width: 190px; aspect-ratio: 1.65; overflow: hidden; background: #fff; border: 1px solid #e1e6ec; border-radius: 8px; }
.work-media > img { width: 100%; height: 100%; object-fit: contain; }
.work-media:hover { border-color: #93abc5; }
/* Crop the first complete RGB/Depth comparison at (1340, 252), 630 × 324 px
   in the 2000 × 1415 poster. Keep this crop independent of thumbnail shape. */
.splatter-crop { position: relative; display: block; width: 100%; aspect-ratio: 630 / 324; overflow: hidden; }
.splatter-crop > img { position: absolute; max-width: none; width: 317.4603%; height: auto; left: -212.6984%; top: -77.7778%; }
.work-copy { min-width: 0; }
.work-copy h3 { font-size: 15px; line-height: 1.4; font-weight: 650; }
.work-copy h3 a { color: var(--link); }
.authors { margin-top: 4px; font-size: 12px; line-height: 1.55; }
.venue-name { color: var(--link); font-weight: 600; }
.venue { display: inline-block; margin-top: 5px; padding: 1px 7px; color: var(--link); background: #e3ecf8; border: 1px solid #b5cae4; border-radius: 4px; font-size: 11px; font-weight: 600; line-height: 1.6; }
.work-summary { margin-top: 7px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.resource-links { margin-top: 10px; }

/* Institution, role, and dates stay aligned in compact rows. */
.timeline-item { display: grid; grid-template-columns: 64px minmax(0, 1fr) 150px; gap: 18px; align-items: start; padding: 15px 0; border-bottom: 1px solid var(--line); }
.timeline-item:first-child { padding-top: 2px; }
.timeline-item:last-child { border-bottom: 0; padding-bottom: 0; }
.period { grid-column: 3; grid-row: 1; text-align: right; font-size: 12px; line-height: 1.6; color: var(--muted); font-variant-numeric: tabular-nums; padding-top: 1px; }
.institution-logo { grid-column: 1; grid-row: 1; display: flex; align-items: center; justify-content: center; width: 64px; height: 48px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.institution-logo img { width: auto; max-width: 54px; max-height: 34px; object-fit: contain; }
.timeline-copy { grid-column: 2; grid-row: 1; }
.timeline-copy h3 { font-size: 14px; line-height: 1.45; font-weight: 650; }
.timeline-copy > p { font-size: 12px; margin-top: 2px; }
.timeline-copy .entry-description { color: var(--muted); font-size: 12px; margin-top: 4px; line-height: 1.6; }
.contact-section { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: #fafbfd; }
.contact-section h2 { font-size: 17px; margin-bottom: 3px; }
.contact-section p { font-size: 12px; color: var(--muted); }
.site-footer { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 11px; margin-top: 22px; padding: 13px 0 20px; border-top: 1px solid var(--line); }

/* Paper tools are available through the resource buttons. */
dialog { width: min(660px, calc(100% - 32px)); max-height: calc(100dvh - 40px); padding: 20px; color: var(--text); background: #fff; border: 1px solid #bbc8d7; border-radius: 12px; }
dialog::backdrop { background: rgb(15 25 40 / 45%); }
.dialog-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 14px; }
.dialog-heading h2 { font-size: 20px; }
.close-button { display: grid; place-items: center; width: 32px; height: 32px; flex-shrink: 0; color: #455368; background: #fff; border: 1px solid #cbd5e2; border-radius: 6px; font-size: 23px; line-height: 1; }
.close-button:hover { background: var(--soft); }
.citation-dialog pre { margin: 0; padding: 14px; background: var(--soft); border: 1px solid var(--line); border-radius: 6px; font: 12px/1.7 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: pre-wrap; overflow-wrap: anywhere; max-height: 52dvh; overflow-y: auto; }
.dialog-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.dialog-footer p { flex: 1; color: var(--muted); font-size: 12px; }
.copy-button { border: 1px solid #245b91; border-radius: 6px; background: #245b91; color: #fff; padding: 6px 12px; font-size: 12px; }
.copy-button:hover { background: #194974; }
.copy-button:disabled { cursor: wait; }
.demo-dialog video { display: block; width: 100%; max-height: 64dvh; background: #111; border-radius: 6px; }
.demo-description { margin-top: 10px; color: var(--muted); font-size: 12px; }

@media (max-width: 800px) {
  .work-row { grid-template-columns: 165px minmax(0, 1fr); gap: 17px; }
  .work-media { width: 165px; }
  .timeline-item { grid-template-columns: 58px minmax(0, 1fr) 140px; gap: 13px; }
  .institution-logo { width: 58px; }
  .institution-logo img { max-width: 49px; }
}

@media (max-width: 620px) {
  html { scroll-padding-top: 68px; }
  .container { width: calc(100% - 28px); }
  .header-inner { min-height: 48px; flex-wrap: wrap; gap: 0; padding-block: 9px; }
  .site-name { font-size: 15px; }
  .menu-toggle:not([hidden]) { display: block; }
  .main-nav { flex-basis: 100%; flex-wrap: wrap; gap: 4px; padding-top: 8px; }
  .js-enabled .main-nav { display: none; }
  .js-enabled .main-nav.is-open { display: flex; }
  .main-nav a { padding-inline: 8px; }
  .profile { grid-template-columns: 88px minmax(0, 1fr); column-gap: 14px; row-gap: 12px; margin-top: 16px; padding: 15px; border-radius: 12px; }
  .profile-photo { width: 88px; height: 108px; padding: 2px; }
  .profile-heading { display: block; }
  h1 { font-size: 28px; }
  .name-chinese { font-size: 14px; }
  .profile-location { font-size: 11px; margin-top: 2px; }
  .research-interests { font-size: 13px; margin-top: 5px; }
  .profile-affiliation { font-size: 12px; }
  .profile-links { margin-top: 8px; }
  .profile-links a { min-height: 29px; padding: 3px 8px; font-size: 11px; }
  .phd-banner { align-items: flex-start; gap: 10px; padding-top: 10px; }
  .phd-notice { font-size: 12px; }
  .news-list li { grid-template-columns: 70px minmax(0, 1fr); gap: 10px; padding-block: 5px; }
  .section { margin-top: 28px; }
  h2 { font-size: 19px; }
  .section-heading { flex-wrap: wrap; gap: 6px 14px; }
  .section-tools { gap: 8px; }
  .section-note { font-size: 10px; }
  .section-tools .action-button { font-size: 11px; min-height: 26px; padding: 2px 7px; }
  .work-row { grid-template-columns: 135px minmax(0, 1fr); gap: 16px; align-items: start; padding-block: 18px; }
  .work-media { width: 135px; margin-top: 2px; }
  .work-copy h3 { font-size: 14px; }
  .authors { font-size: 11px; }
  .work-summary { font-size: 12px; }
  .timeline-item { grid-template-columns: 54px minmax(0, 1fr); column-gap: 14px; row-gap: 4px; padding-block: 14px; }
  .period { grid-column: 2; grid-row: 1; text-align: left; padding-top: 0; font-size: 11px; }
  .institution-logo { grid-column: 1; grid-row: 1 / 3; width: 54px; height: 45px; }
  .institution-logo img { max-width: 46px; max-height: 31px; }
  .timeline-copy { grid-column: 2; grid-row: 2; }
  .timeline-copy h3 { font-size: 13px; }
  .contact-section { gap: 12px; padding: 12px; }
  .site-footer { margin-top: 18px; font-size: 10px; }
  dialog { padding: 16px; }
  .dialog-heading h2 { font-size: 18px; }
}

@media (max-width: 480px) {
  .profile { grid-template-columns: 78px minmax(0, 1fr); gap: 12px; padding: 13px; align-items: start; }
  .profile-photo { width: 78px; height: 96px; }
  .profile-copy { display: contents; }
  .profile-heading, .research-interests, .profile-affiliation { grid-column: 2; }
  .profile-heading { grid-row: 1; }
  .profile-photo { grid-column: 1; grid-row: 1 / 4; }
  h1 { font-size: 27px; }
  .research-interests { grid-row: 2; margin: -6px 0 0; font-size: 12px; line-height: 1.5; }
  .profile-affiliation { grid-row: 3; margin: -7px 0 0; font-size: 11px; }
  .profile-links { grid-column: 1 / -1; margin: 0; gap: 5px; }
  .profile-links a { font-size: 11px; padding-inline: 6px; gap: 4px; }
  .profile-links .icon { width: 12px; height: 12px; flex-basis: 12px; }
  .phd-banner { display: block; }
  .phd-notice { display: inline; }
  .phd-banner .action-button { min-height: 27px; font-size: 11px; margin: 4px 0 0 5px; }
  .work-row { grid-template-columns: 112px minmax(0, 1fr); gap: 8px 14px; padding-block: 16px; }
  .work-media { grid-column: 1; grid-row: 1 / 3; width: 112px; aspect-ratio: 1.5; margin-top: 0; }
  .work-copy { display: contents; }
  .work-copy h3 { grid-column: 2; grid-row: 1; font-size: 14px; }
  .work-copy .venue { grid-column: 2; grid-row: 2; justify-self: start; margin: 0; }
  .authors, .work-summary, .resource-links { grid-column: 1 / -1; margin-top: 0; }
  .authors { font-size: 12px; }
  .resource-links { gap: 5px; margin-top: 1px; }
  .resource-links a, .resource-links button { padding-inline: 7px; font-size: 11px; }
  .contact-section { flex-wrap: wrap; }
}

@media (max-width: 360px) {
  .profile-links .icon { display: none; }
}

@media print {
  body { font-size: 10pt; }
  .container { width: 100%; }
  .site-header, .skip-link, .site-footer > a, [data-citation-control], [data-demo-control], dialog { display: none !important; }
  .profile { margin-top: 0; padding: 14px; }
  .profile-photo { width: 100px; height: 120px; }
  .section { margin-top: 18px; }
  .work-row, .timeline-item { break-inside: avoid; }
  .site-footer { margin-top: 18px; }
}